Improvement in harvesters



new one l `To allfwlioin hul-y concer g 'Be it known thatl I, Ausunr H.WAGNER, of Chicago, iufthe countyof Cook and in the Statel of`Illinois,ha ve invented certain fnewand useful Imi provenients inHarvestersl;` and do hereby declare i that the following isa full,clear, andv exaetvdescriptionfthereoreferencebeing had to `the accompanying drawingmaking a part 1otfthis speciication, in wwhichi Figure 1" isa plan view `.proved harvester;l i i Figures 2 and 3 are a front and auend elevation,` l respectively, of the same; l

Vof the upper side of my im- E'gure 4 is a central longitudinal sectionofthe air-pump, on the line a; :vof` 'igrZ; i j Figure is an `elevationof the inner side oi the valve-box with `the cover removed, so as toshow the jvalite, i y i Figure 6 `is a vertical central section nt' thesame, with the coverl inV place; and y' 3 i Figure 7 `isja`verticallongitudinal. section of the operating cylinder and piston. 1Letters of like .name andkind refer to like partsin `leach of thefigures. c `My invention has for its object the employment of i.compressed air, orits equivalent, for the purpose of Ndriving ftheoperating mechanism of harvestersor rnowersyand, to this end` L i `Itconsists in combining,lwith the driving-axlc'and cutter-har of aharvester 4or mower, air-compressin g t and. air-actuating devices,substantially as and for'the i i purpose hereinafter shown and setforth.`

4It further consists in theconstrnction of the valvei chamber and-'valvefor controlling the ,admission of nir to the working cylinder,substantially asis hereinafter specified. c. l

It Afinally. consists in the generalv construction and arrangement ofthe air-compressing and operating mechanism, substantially asishereinafter set forth.

A represents a rectangular metal frame, `having journaled uponitsuppersidean axle, B,i`upon each end of which is a traction-wheel, C,of usual form.

Secured to or upon `the `rear end of the'` frame A is unairpnrnp,fconsistingof a short cylinder, D, inclosed at either endbymeans of a head, E, andhavc inguponone sidea valvebox, F, lwhichcommunicates `withtheinterior of vsaid cylinder through. two open#`ings,j, situatednear the ends of said boxgand each closed by means ofia springfz, opening outward from' the cylinder, i i i 3 An opening,d,`pass iug through .each head E, and closed uponthevinner side,hynleans of aspring valve,

@serves toadmit air to thecylin'der upon'either side `oi' the* piston orplunger @which plunger lis of usual .-iiiusniipfrynQwae'NER, or carene@rtniiiiois.,r

c Landsmann@1os,o69,date 1oa0ber4,1870.

; IMPRoi/ EMNT IN `nARvE's-rsns.

i The Schedulereferred to in these-VI ihetters.Patent` and making partcf'the carne;v

construction, and is operated by means of a rod, H,

secured to its center, and passing outward through a stni'fingfbox, I,within the head E', its outer end being connected to or within a crank,B', upon the axle B, by means 'et' a connection, K, pivoted upon bothyrod `and crank. f

VAs thus eonstructedthe motion `of the axle, caused by the revolution ofthe traction-wheels, will produce a reciprocating motion of `thepump-plunger, by which means air will be alternately vdrawn into thecylinder, through the openings in the heads, and the'n expelledtherefrom into the valve-box. i

l'Secured to or upon the side of the frame. A is a cylindrical chamberor valve-box,'L,inclosed upon its inner end hy means of a head, L', andconnected with, the valve-box F by means of a pipe, M. The aXleB passesthrough the center of the valve-box L, suita y tble stuiling-boxcslbeing provided for its reception within both the closed end of saidboxand the head L',

N represents a cylinder, secured horizontally and at a rightangleto theline of 'draft upon the front end ofthe frame A, and containing apiston, O,r of usual form, which is connected with the inner -end et'the cutter-bar I), by means of a' connection, Q, pivotedto passinginward through the outer end of said box, so

as to admit air from the latter into said cylinder, for the purposeofactuating the piston.

y In order to control the admission of air to the cylinder, and cause itto enter each end thereof alternately, a circular disk, S, correspondingin size tothe inside of the-valve-box L, is 'fitted upon the axle B,

with itsI outerplanc face ,bearing upon the correspondbox L, arevprovided in and through the disk or valve S, and so arranged `withrelation to said opeuingso as to aiord communication -through the sameandthe pipes R, with but one end of thecylinderat the same time. .y j yA suitable key, ttled within the surface of the axle, and loosely withint e seat of the valve S, secures `said axle and valve in positionradially, so asto cause `them to revolve together, while allfowiug t'ielatterv i 2...,- v v I.

to-movc freely in a longitudinal direction upon the' der N is situatedupon its frontside, midway between its ends, and is opened and closed bymeans of the piston 0, the length of.\vhich is just one-half the lengthof its stroke less one-half the width of said port.

As thus constructcd'the operation of this device is as follows:

Upon driving forward .the machine the motion of the traction -wheels iscommunicated through the 'crank B and connection K to the pump-plungerGr, causing the same to force the air into the valve-box L, from whichit is admitted alternately into opposite ends of the cylinder N, forcingthepiston O forward until it has passed the exhaust-port U, when the airescapes, afresh supply enters at the opposite end of the cylinder, andreturns the piston to its first position.

By means of the connection Q, the reciprocating motion of tlic piston iscommunicated to the cutterhal', the force and velocity of which will begoverned entirely by the rrelative diameters of the airpump and piston,and consequently the pressure of the air employed as a motive-power.

V represents the shoe ext-ending forward and upward in a curve from theheel ot' the finger-bar, and having pivoted within a suitable slot,passing vertically and longitudinally through the same, a roller, i

\V, as seen in figs. 1 and 2. The especial advantage obtained by theemploynient of the roller and its arrangement within oi` up- -on theshoe is that, While'muc'n lesseniug the draft of the machine, it isthoroughly protected from. injury, and is consequently more durable,

It is believed that the employment of air, compressed by the motion otthe machine, for imparting motion tothe operatingr paris of a harvesteror mower, will cause a saving in the power heretofore required, andmaterially increase its uniformity of motion and efficiency.

lIaving thus t'ully set forth the nature and merits of my invention, Y

What I claim asnew isf 1. In con'ihinatiou with the driving-axle andcutterbar of a harvester ormower, air-compressing and airactuatingdevices, substantially as and for the purpose specified. y

2.V The valve-box L, provided with the inductionport M andeduction-ports r 1', in combination with the rotary valve S and the axleB, substantially as and for the purpose shown and described.

' 3. The combination of the axle B, provided with the crank B', thecylinders D and N, the valve-boxes F and L, the valves z and S, theplunger G, the rods 1I and o, the connections K and Q,'and the piston O,substantially as and for the purpose shown. In testimony that I claimthe foregoing, I have hereunto set my hand this 9th day of July, 1870.

AUSBVER'I H. WAGNER Witnesses:

CHAs. KAEsTNEn, Cuirs. D; FLANDERS.

